Sorry to abuse the thread with more videos...but these are videos of vintage pics. Come for the hokey period salesmanship, stay for the close up pics of new Chevrolet trucks (A Super no less in the 72 video)...if not for the truck, the test at the end is pretty entertaining and probably worth staying for.
1972:
https://www.youtube.com/watch?v=BU5NQG9FRxM
1970:
https://www.youtube.com/watch?v=E0x6otSW7BI